exam Maths Puzzle Numerical Ability

if 5x - x = 2x + x - 5 then x =

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exam Other Question

9x squared = 1

the directions said simplify
Graph the following equations; calculate the slope, x-intercept, and y-intercept, and label the intercepts on the graph.

1) y = x + 3

2) y = -2x - 7

3) 2x + 3y = 9